Chloride Ions Penetration Resistance of Steam-Cured Concrete for Railway Precast Elements

Abstract:

By use of ASTM C1202, this paper studied the influence of mineral admixtures on the chloride ions penetration resistance of the steam-cured concrete. The experimental results indicated that mineral admixtures improved the permeability properties of high-performance concretes, but at different rates depending on the binder type. FA required a relatively longer time to get its beneficial effect. For each 10%~40% replacement of OPC by FA in a concrete mix, the values of coulomb charge of steam-cured and standard curing concrete reduces by 8%~17% at180 days. When 30% weight of the OPC were replaced by FA and ground blast furnace slag(GBFS), the inclusion of 30% mineral admixtures provided a significant improvement to the chloride ions penetration resistance properties of steam-cured and standard curing concrete at 28 days and 180 days, especially for the combination of 10% FA and 20% GBFS (double adding).

• Periodical: Advanced Materials Research (Volumes 219-220)
• Pages: 1419-1422
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.219-220.1419
• Online since: March 2011
• Authors: Zhi Min He, Jun Zhe Liu, Tian Hong Wang
• Keywords: Chloride Ion, Mineral Admixture, Penetration, Steam-Cured Concrete

References

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